我正在使用blobstore上传和下载python版本的Google App Engine中的文件。我理解如何逐行将对象写入blobstore,我了解如何POST和下载blobstore项,但如果我拥有的是blobstore键,如何逐行读取blobstore中的数据? ?
file_name = files.blobstore.create(mime_type='application/octet-stream')
with files.open(file_name, 'a') as f:
f.write("data")
files.finalize(file_name)
# Get the file's blob key
blob_key = files.blobstore.get_blob_key(file_name)
#starting with the blob_key, read from the blobstore line-by-line.
# ???
#with files.open() as f:
#foo = f.read()
答案 0 :(得分:3)
我认为你需要blob reader。以下是使用示例:
from google.appengine.ext import blobstore
blob_reader = blobstore.BlobReader(blob_key)
for line in blob_reader:
process_line(line)